Code Quality Rank: L2
Programming language: Java
License: GNU Affero General Public License v3.0
Tags: App    
Latest version: v4.64.5

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Signal Android

Signal is a simple, powerful, and secure messenger.

Signal uses your phone's data connection (WiFi/3G/4G/5G) to communicate securely. Millions of people use Signal every day for free and instantaneous communication anywhere in the world. Send and receive high-fidelity messages, participate in HD voice/video calls, and explore a growing set of new features that help you stay connected. Signal’s advanced privacy-preserving technology is always enabled, so you can focus on sharing the moments that matter with the people who matter to you.

Currently available on the Play Store and signal.org.

Contributing Bug reports

We use GitHub for bug tracking. Please search the existing issues for your bug and create a new one if the issue is not yet tracked!


Joining the Beta

Want to live life on the bleeding edge and help out with testing?

You can subscribe to Signal Android Beta releases here: https://play.google.com/apps/testing/org.thoughtcrime.securesms

If you're interested in a life of peace and tranquility, stick with the standard releases.

Contributing Code

If you're new to the Signal codebase, we recommend going through our issues and picking out a simple bug to fix (check the "easy" label in our issues) in order to get yourself familiar. Also please have a look at the CONTRIBUTING.md, that might answer some of your questions.

For larger changes and feature ideas, we ask that you propose it on the unofficial Community Forum for a high-level discussion with the wider community before implementation.

Contributing Ideas

Have something you want to say about Signal projects or want to be part of the conversation? Get involved in the community forum.



For troubleshooting and questions, please visit our support center!



Looking for documentation? Check out the wiki!


Legal things

Cryptography Notice

This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.


Copyright 2013-2022 Signal

Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html

Google Play and the Google Play logo are trademarks of Google LLC.

*Note that all licence references and agreements mentioned in the TextSecure README section above are relevant to that project's source code only.